Fernández-Montraveta, Ana, et al. “The Contribution of Aspectual Auxiliary Verbs to the Factual Value of Verb Periphrases in Spanish: An Empirical Study”. 2024. Research in Corpus Linguistics, vol. 12, no. 1, Feb. 2025, pp. 30–58, doi:10.32714/ricl.12.01.02.